Citel products do have a listing mark but this is European style CE, not American style UL/ETL. Citel is reputedly working on American certification but one would be advised to not hold one's breath. <div><br></div><div>
The Citel products which mount to a DIN rail have an LED indicator which goes dark once the surge elements have been sacrificed. Also some of their units have an auxiliary switch which can remotely indicate a blown condition. This is in the form of dry contacts..a normally open and a normally closed one, so various indicator circuits can be designed around that. The contacts have a low amp AC rating and also a (lower amp) DC rating but I do not remember the numbers at present. </div>
<div><br></div><div>Jolliness,</div><div><br clear="all">Mick Abraham, Proprietor<br><a href="http://www.abrahamsolar.com">www.abrahamsolar.com</a><br><br>Voice: 970-731-4675<br>
<br><br><div class="gmail_quote">On Tue, Sep 14, 2010 at 12:43 PM, R Ray Walters <span dir="ltr"><<a href="mailto:ray@solarray.com">ray@solarray.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div style="word-wrap:break-word">You could buy several ground rods for the cost of one Delta.<div>Ground Impedance is the real issue. Both the Delta and the Polyphasor need a good ground to work.<div>While I haven't seen much of a correlation between Deltas and reduced lightning damage, (lots of system damage with and without)</div>
<div>I have found that well grounded systems (tied to a steel cased well) have never had a problem, even with direct strikes to a wind turbine (did lose the $40 turbine rectifier, but nothing else)</div><div><br></div><div>
I now own a clamp-on ground impedance tester, and the results were miserable. Some electrodes were over 800 ohms to ground! (code requires under 25 ohms)</div><div>I'd spend more time and money reducing ground impedance, and then if it makes you feel good inside, throw the little "lightning faeries" in, if the AHJ isn't looking.......</div>
<div><br></div><div>If its really lightning country, and a really expensive off grid system, I use Polyphasor, but they have their own issues. (very expensive, no UL listing, loose internal connections, nuisance tripping, need a large J-box to mount them inside, etc.)</div>
<div>I haven't tried the Citel stuff, but it looks to be listed, and mounts on a DIN rail. After installing a couple hundred Deltas, I'd try something else at this point.</div><div><br></div><div><br><div>
<span style="border-collapse:separate;border-spacing:0px 0px;color:rgb(0, 0, 0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div>
R. Walters</div><div><a href="mailto:ray@solarray.com" target="_blank">ray@solarray.com</a></div><div>Solar Engineer</div><div><br></div><div><br></div><br></span>
</div><div><div></div><div class="h5">
<br><div><div>On Sep 14, 2010, at 10:22 AM, Kristopher Schmid wrote:</div><br><blockquote type="cite">
<div>
<div><span><font face="Arial" color="#0000ff" size="2">My
thought here is that nothing will protect the equipment from a direct strike,
but a near strike that may induce a significant surge may be absorbed by the LA
and protect the equipment. I like the feedback so far. It would not
break my heart to stop using them altogether.:-}</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2"></font></span> </div>
<div><span><font face="Arial" color="#0000ff" size="2">Kris</font></span></div><p><font size="2">Legacy Solar<br>864 Clam Falls Trail<br>Frederic, WI
54837<br>715-653-4295<br><a href="mailto:solman@legacysolar.com" target="_blank">solman@legacysolar.com</a><br><a href="http://www.legacysolar.com" target="_blank">www.legacysolar.com</a>
</font></p>
<blockquote style="margin-right:0px">
<div></div>
<div lang="en-us" dir="ltr" align="left"><font face="Tahoma" size="2">-----Original Message-----<br><b>From:</b>
<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>
[mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>August
Goers<br><b>Sent:</b> Tuesday, September 14, 2010 10:39 AM<br><b>To:</b>
RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Delta
LAs<br><br></font></div>
<div>All -</div>
<div> </div>
<div>I guess my thought is a little off topic, but are lightning arrestors
even worth using at all? My logic has always been that if lightning does
indeed strike that it's likely going to blow the arrestor and and inverter. We
don't have much of a lightning issue issue in the Bay Area so I don't have any
direct experience.</div>
<div> </div>
<div>Best,</div>
<div> </div>
<div>August<br><br></div>
<div class="gmail_quote">On Tue, Sep 14, 2010 at 6:29 AM, Kristopher Schmid
<span dir="ltr"><<a href="mailto:solman@legacysolar.com" target="_blank">solman@legacysolar.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="padding-left:1ex;margin:0px 0px 0px 0.8ex;border-left:#ccc 1px solid">It
is quite ironic that just a week after I posted a question to the
group<br>on testing the integrity of lightning arrestors, I had one
apparently faulty<br>out of the box. The manifest of this was
interesting: when the AC LA<br>(LA302R) was connected in parallel on the AC
input to a SB3000 inverter,<br>there was 125vac neutral to L1, 125vac
neutral to L2, and 1Vac L1 to L2.<br>SMA tech support suggested the LA as
the issue and sure enough, it was.<br>Attempting to test good and faulty
arrestors with an ohmmeter gave the same<br>result - off scale
open.<br><br>Any thoughts or comments from the group?<br><br>Kris
Schmid<br><br>Legacy Solar<br>864 Clam Falls Trail<br>Frederic, WI
54837<br>715-653-4295<br><a href="mailto:solman@legacysolar.com" target="_blank">solman@legacysolar.com</a><br><a href="http://www.legacysolar.com/" target="_blank">www.legacysolar.com</a><br><br>_______________________________________________<br>
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